Try copying the workstation file to the other computer as well. (Backup/rename the one that is there first though. Just in case …)
The workstation file (workstation.nv2, found in the NV2 install directory) contains all your personal settings (window arrangements, column widths, etc.) for each database you use. If you copy it to the NV2 install directory of the other machine then you will carry all your settings along with you – and I believe that will include your copy/paste settings.